Not doing it in Tutorial 6, but ran into same problem, multiple browsers. All loaded tables are affected. Was running fine, then any component that touches the tables, cannot see the, or present the data. In Ambari and Nagios. All hosts and services are showing green. The VM is Hyper V on server 2012. VM is 16 gig. Everything else seems to be working fine, smoke test comes back clean. Appears to be a zombie process. Any ideas?